International organizations are international legal persons which are established by an international agreement duly signed and put into effect by the governmental bodies of at least three States. The constituting documents, which are usually called statutes, accommodate provisions regarding the main structure, features and working principles of the organization. These include the basic aims, purposes, goals and principles of the organization, the membership criteria, the main bodies/organs and their powers, as well as the decision-making and voting procedures. As can be understood from the information given, the correct answer is E. All the provisions in the answer choices are among  the provisions regarding the main structure, features and working principles of the international organizations accommodated by the constituting documents, which are usually called statutes.